Avian

I noticed I have several nightmare trends that are very common in nightmares (although I don't frequently have nightmares). A lot of times there will be several of these all at once.
1. Thick Air -
For some reason it is very hard to move. This is usually due to air that seems thick, but I can't actually feel it. I just need to apply more force to get through it. However, I can move at normal speeds, sometimes faster (if I am running than something) once I gather momentum. Almost every time, though, some obstacle ends up in my way and since I have only forward momentum I crash into it or can't avoid it. Imagine running really fast on REALLY slippery ice and trying to navigate around an obstacle. I don't slip or anything, the ice is just an illustration of the feeling, but I can't turn for my life.

2. Clumsiness -
With this type I am very clumsy, falling over constantly. Like I will fall over, get up, and fall over again before I can even fully stand up. Or anything regarding being psychotically clumsy.

3. Blindness -
I kind of blind. It isn't like looking into the darkness, it is extremely stressful and tiring. It is kind of like squinting constantly, or having a thick shade over your vision. A lot of times I won't be able to see even if I have a very bright light right in front of me. That or I just... can't see things.. I just can't. Not in a way that they seem invisible, but like text that is too small to read.

4. Left Behind -
There will be a monster or some reason for everyone to get away really fast and I am not fast enough. I am left alone to face the problem. This more commonly is combined with other ones.

5. Giants -
Giant creatures coming after me. The scary part isn't that they are so strong or dangerous, it is that they seem inescapable. It feels like no matter how far you run or where you hide, their long legs and sweeping vision will overtake you. I got a rush when I saw the first Attack on Titan episode because the part where they break into the city gave me this feeling and I felt genuine dread. Unfortunately it was a one-time thing and I can't get that feeling again, which sucks because it was really cool.

I will update this if I remember/find others.